Counting Coins

What mistake did this student make?

• no mistake

• 11 drops in 11-20

• 27 drops in 31-40

• 21 drops in 21-30

Tags

NGSS.MS-PS3-4

The numbers along the bottom of the graph are

• The number of drops that fit on a coin in 1 attempt (trial)

• The number of times you got that count.

How does the concept of counting coins relate to the conservation of mass in a closed system?

• Coins can be created or destroyed, violating conservation of mass.

• The total mass of coins remains constant, similar to conservation of mass.

• Coins can change in mass, unlike conservation of mass.

• Conservation of mass only applies to gases, not coins.

Tags

NGSS.MS-PS1-5

Which scientific principle is demonstrated by counting coins to ensure none are missing?

• Law of Conservation of Energy

• Law of Conservation of Mass

• Law of Conservation of Charge

• Law of Conservation of Momentum

If you have a mixture of different coins, how can you use the concept of density to separate them?

• By using a magnet to attract certain coins

• By shaking the container to sort them by size

• By placing them in water to see which float

• By measuring their mass and volume to calculate density

What scientific method step is similar to counting coins to verify a hypothesis?

• Formulating a hypothesis

• Conducting an experiment

• Analyzing data

• Drawing a conclusion

Tags

NGSS.MS-PS1-2

How does counting coins relate to the concept of accuracy and precision in scientific measurements?

• Counting coins is always accurate but not precise.

• Counting coins is precise but not always accurate.

• Counting coins can be both accurate and precise.

• Counting coins is neither accurate nor precise.

In an experiment, you count coins before and after a chemical reaction. What does it mean if the number of coins changes?

• The reaction created new coins.

• Coins were lost or gained, indicating an error.

• The reaction destroyed some coins.

• The reaction had no effect on the coins.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How can counting coins help in understanding the concept of significant figures in scientific data?

• Each coin represents a significant figure.

• The total number of coins is the only significant figure.

• Counting coins has no relation to significant figures.

• Significant figures are only used in chemical equations.

What real-world application of counting coins can be related to the scientific concept of calibration?

• Using coins to balance a scale

• Using coins to measure temperature

• Using coins to test pH levels

• Using coins to calibrate a speedometer